G g187play New member Joined Feb 22, 2009 Messages 4 Apr 2, 2009 #1 I am having trouble factoring these. 121y-y^3=(11-y)(11+y^2) ??? y^2-11y = (y+11) (y-11) This is driving me crazzzzy! I am not sure what to do with all those "y"'s! I can handle a y^2 - 18 y^2-81= (y+9)(y-9)
I am having trouble factoring these. 121y-y^3=(11-y)(11+y^2) ??? y^2-11y = (y+11) (y-11) This is driving me crazzzzy! I am not sure what to do with all those "y"'s! I can handle a y^2 - 18 y^2-81= (y+9)(y-9)
D Denis Senior Member Joined Feb 17, 2004 Messages 1,700 Apr 2, 2009 #2 Re: 121y-y^3 and y^2-11y Slow down :wink: 121y - y^3 = y(121 - y^2) = y(11 + y)(11 - y)
